Stapling tool



May 31, 1927.

c. J. WESTIN STAPLING TOOL Filed March 10, 1924 4 Sheets-Sheet 1 azmaoy gg May 31 1927.

c. J. was-rm /NVE/VTOFI.

ATTOR/VZX C. J. WESTIN May 31, 1927.

STAPLING TOOL 4 Sheets-Sheet 5 Filed March 10, 1924 ATTOKNE).

May 31, 1927 c. J. was-rm 'STAPLING TOOL Filed March 10 1924' 4 Sheets-Sheet 4 INVENTO/R ATTOF/VEY.

Patented May 31, 1927.

UNITED STATES PATENT: OFFICE,

CHARLES J. WESTIN, OF ROCKAWAY, NEW JERSEY, ASSIGNOR '10 WIREBOUNDS PAT- 1 srarnmq moon.

ENTS COMPANY, A. CORPORATION OF MAINE. a

Application filed March 10, 1924. Serial No. 698,052.

This invention relates to stapling mechanism, and particularly to a hand-operated tool for driving staples over binding wire into box parts to secure the box parts together and the binding wire thereto.

Among other objects, the invention is intended to provide an efficient hand-operated tool for driving staples into box parts and which is adapted for use in stapling binding wireto box parts; to provide a hand-operated stapling tool with means for positioning a staple over a binding wire and for driving such staple over such wire into box parts; to provide a hand-operated stapling tool with means automatically to feed staples to driving position and means to control the feed of staples to the driver whereby the driver may be operated a plurality of times in driving each staple, thus permitting the driving of long staples which require more than one driving blow to force them into the work.

One illustrative embodiment of the invention is shown in the accompanying drawings, in which:

Fig. 1 is a side elevation of a stapling-tool embodying the invention, the tool being shown in driving position on a portion of a wirebound box blank to illustrate the use of the tool in driving a staple over a binding wire into box parts.

Fig. 2 is an end elevation of the illustrative tool seen from the left in Fig. 1.

Fig. 3 is the same as Fig. 2except that the staple-feeding mechanism is swung out of eeding position to permit a new supply of staples to be inserted;

Fig. 4. is a vertical section taken on the line AA of Fig. 2 and "showing the posi 'tion of the parts just prior to the raising of t the driver to permit e feeding of a staple to drivin position beneath the driver.

Fig. 5 1s a similar view showin the driver in raised position and a staple ed to driving position beneath the driver.

Fig. 6 is a similar view showing the hammer raised and ready to be driven downward against the driver to force the, staple out of the tool.

Fig. 7 is a similar view showing the position of the parts upon completion of a staple-driving operation.

Fig. 8 is a section taken on the line B-B of Fig. 7.

Fig. 9 is a sectiontaken on the line CC The illustrative tool is particularly well I adapted for stapling binding wire to cleats I and side sheets of a wirebound box blank, and is a valuable addition to the equipment of a wirebound box manufacturing plant 1n which wirebound box blanks are made on power-opera'ted box blank machines which staple a plurality of binding wires to a succession of boxparts automatically fed past the staple-forming and driving mechan sm. In the operation of such box blank machines, it sometimes happens that a stapling head will fail to function properly, and, as a result, a defective box blank will come through the machine, that is, a blank in "which suflicient staples have not been driven to properly secure the parts together and the blnding wire thereto. Such a defective .box blank is either thrown away, or an attempt is made to render it effective by drivlng ad'- ditional staples over the binding'wire with a hammer. Such a procedure only renders the defective blank partially effective as it is most diflicult, and ahnost impossible, to drive a long staple into a substantial thickness of wood with a hammer owing to the fact that-the legs of the staple, not being supported, will colla se under the blows of the hammer. The illustrative tool is designed primarily for use. in driving staples over the binding wire of these defective box blanks to render'them efl'ective, and is adapted to position and drive the same length of staple as is driven by the box blank ma chine which produced the defective box blank, which machine usually forms and drives a staple approximately one and one- I quarteninches in length. y In Flg. 1, a portion of a wirebound box blank is shown comprising a cleat'a, a sheet of side material b, and a bindingwire n. The cleat, sheet and binding wire have been secured together on a box blank machine by staples (l, and the stapling mechanism of the box blank machine has missed one stapling operation. thus leaving a large space between adjacent staples d as shown in Fig. 1. The illustrative tool is shown in-position to drive the missing staple between staples d.

The illustrative tool comprises generally means to hold a supply of staples, a staple- .guide to embrace and support a staple while it is being driven. means to feed a staple to the staple-guide, means to control the staple-feeding means,..a driver to drive the staplevfrom the staple-guide into the box parts, a hammer to impart driving force to the driver, and means to position the tool relative to a binding wire in such manner that the staple, when driven, will straddle the binding wire. 7

As shown in the drawings, the several mechanisms are supported or carried by a housing 1 through which a hammer 2 is reciprocable vertically by means of a'handle 3 bolted tohammer 2. A staple-driver 4-is reciprocable vertically in a casing 5bolted to the lower end of housing 1. As best shown in Figs. 8 and 9. the opening in casing 5, through which the driver 4 reciprocates, forms a staple-guide 6 which receives the staple, forces its legs into parallelism and supports and guides the staple during the driving operation.

The supply of staples for the tool is carried by a staple-supply-arm 7 bolted to cas-- ing 5 and projecting laterally from an openmg in casing 5 adjacent staple-guide 6. Staple-supply-arm 7 is formed tosupport a Supply of staples'which straddle the arm,

as shown in the drawings, and which may.

be pushed along said arm and into stapleguide 6 when ,driver 4 is raised sufliciently to ermit a staple to be pushed into the gul e. The staples are fed along staplesupply-arm 7 toward staple-guide 6 by a staple-feed-block 8 which straddles supplyarm 7 and is supported by a rod 9 slidable in an extension 10 of housing 1. Block 8 constantly presses the supply of staples on arm 7 ;toward staple-guide 6 by means of a spring 11 connecting block 8 and extenslon 10. I

To prevent the staples from being displaced on supplyearm 7, a rod 12 is pivoted to casing 5 and is held directly above arm 7 bybeing passed through an opening 13 in block 8, the arrangement being such that the rod 12 is held close enough to the supply of staples on arm 7 to prevent such staples from being dislodged from said arm.

To permit block' 8 to be removed from feeding position when a new supply of staples is inserted on arm 7, rod 9 is provided with aslot 14 through which a pin 15 carried by casing 5 extends and upon which pin rod 9 may be pivoted and swung out of position, as shown in Figs. 3 and 10, whenblock 8 is moved out beyond the extremity of arm 7. The movement of block 8 beyond the Whenever driver 4 is so raised, a staple is .forced into guide 6 beneath the driver'and in position to be driven downward by the driver.

Driver 4 is raised to permit a staple to be.

fed beneath it by a latch 16 carried by handle 3 and which is adapted to be pressed downward against the action of a spring 17 and engage a latch pin 18 carried by a driverback 19 riveted to the upper end of driver 4'. Latch 16 which extends up through handle 3 is provided at its upper extremity with a knob 20 which may be pressed downward by the thumb of the operator. Latch 16 fits in 'a groove 21 formed in hammer 2 and is slightly bent at a point intermediate its =extremities so that'pressure of housing 1 at the extremity of the latch intoengagement with latch pin 18 when the latch is pressed downpoint of bending will force the lower' ward. After latch 16 has been pressed downward into engagement with latch pin 18, handle 3 is raised carrying driver 4 upward until ithas passed above the supply of staples on staple-supply-arm 7 whereupon a staple is forced into staple-guide 6 beneath I the'driver 4.

To release latch 16 from its engagement with latch pin 18 after driver 4 has been raised sufliciently to permit astaple to enter staple-guide 6, latch 16 is provided with a.

trip-pin 22 which passes through an opening in hammer 2 and is adapted, when raised, to engage. a trip-screw 23 carried by housing '1. The engagement between trippin 22 and trip-screw 2'3 forces latch 16 out of engagement with latch pin '18. Hammer 2 is cut away on one side to permit tripscrew 23 to extend into the path of travel of trip-pin 22. I

WVhen latch 16 is released from its engagement with latch pin 18, spring 17 raises latch .16 sufliciently so that it will not engage latch pin 18 when the handle 3 is subsequently lowered for the driving operation. Knob 20 of latch 16 is undercut at 24 to engage a hardened 'plate 25 bolted to the top of handle 3 when spring 17 has raised the latch suificiently to permit such engagement. This engagement, which is causedby the pressure of housing 1 against thebent portion of latch 16, serves to hold latch 16 above latch pin 18 during the driving blows of handle 3. l v

When latch 16 is released from its engagement with latch pin 18, driver 4 drops down until its lower extremity contacts with the head of the staple whichhas been fed in beneath it. The operator then raises and lowers handle 3 a sufficient number of times to drive the staple into the box parts, each lowering of the handle causing hammer 2 to strike driver-back 19 and force driver 4'and the staple downward. When the staple is fully driven into the work, the operator again presses latch 16 into engagement with latch pin 18, the .driver 4 is raised, and an- .other staple is fed into staple-guide 6.

It will be noted that each time the driver is ralsed above the supply of staples on staple-supply-arm 7, one staple isffedinto staple-guide 6 and that no staple can. be fedinto staple-guide 6 whilethe driver occupies sald guide, and that driver 4 and hammer 2 being disconnected, the driver may remain in sta le-guide- 6 until the staple beneath it is ully driven regardless of how many blows are required to force the staple into the work. .This is particularly advantageous in driving the long staples required in wirebound box. blanks as several blows are usually required to drive such a staple -into box parts by a manual operation.

. To prevent hammer 2 from turning in housing 1, the hammer is flattened for a certain distance on one side, as shown in- Figs. 2, 3 and 11, and a pin 26 is driven through housing 1 in such position as to contact with the flat side of hammer. 2, thus preventing any turning movement of the hammer. Said flattened sideof hammer-.2 and pin 26 also serves to limit the up and down movement of the hammer.

To facilitate the feeding of staples along staple-supply-arm 7 said arm is made wider at its base than at its top and its sides'are tapered so that when staples are placed.

thereon the legs of the staples will be uniformly spread. This uniform spreading of the staple legs on the supply-arm insures a lengthwise contact between the legs of adjacent staples and prevents the leg of one staple from'being forced under the leg of anadjacent stap e. Thus the pressure of feed-block 8 is communicated uniformly to each staple on supply-arm 7 and said staples are fed along said arm without any tendency to jam.

To assist in guiding a staple from staplesupply-arm 7 into staple-guide '6, said arm 7 is provided with a bevelled surface 27 on which the points of a staple'may slide when the sta le 1s forced into guide. 6.

Stap e-guide 6, at the, point where the staples enter, is wider than at its lower extremity so that the staples fed to the guide from staple-supply-arm 7 may enter the guide without danger of jamming.

To force the legs of the staple into parallelism, the staple-guide 6 is provided with bevels 28 which engage the legs of any staple whichmay be spread and force them toward each other.

' To posltion the tool relative to a binding wire over which a staple is to" be 'driven', a groove 29 is cut across the bottom of the tool as best Shown in Fig. 10. This groove longitudinal centerline of the wire).

' To assist the operator in definitely locat- 5 opposite the staple-guide 6' as shown in Fig. 10. These notches, indicate to the operator wherelthe staple will be driven so that ing the point along the wire where a staple. is to be driven, notches 30 are out in casing by shifting the toolv along the wire until g a notch 30 registers with the point on the wire where a staple is desired the operator is able to definitely control the location of the staples in the work. i I

The operationv of, the'tool is as follows:

After placinga supply of staples on staplesupply-arm 7 1n the manner hereinbefore described, the operator rests the bottom of the '1. ing the groove 29 over the binding wire 0,

tool on the box parts to be stapled, positionas shown in Fig. 1, and shifting the tool along the binding wire until notch 30 is opposite the desired staple-driving oint. The parts of the tool arethen 1n 1: e shown in .Fi 7. Knob '20. of late 16- is thenlpressed downward, forcinglatch 16 into engagement with latch pin 18,- as shown in Fig. 4. Handle 3 is then ralsed carrymg driver 4 upward above the supply of staples on staple-supply-arm 7, as shown in Fig. 5,

osition whereupon staple-feed-block 8, through the action of spring 11, forces astaple l-n'to staple-guide 6.' As handle 3' continues to rise, trip-screw 23 engages trip-pm 22 and forces latch 16 out of engagement with latch pin 18, whereupon, driver 4 drops down-' ward until it restslonthe head of the staple which has been fed in beneath it, and latch 16, throughthe action .of spring 17, is raised sufliciently to. permitcutaway portion 24 of knob 20 to snap over hardenedplate 25 of handle 3, as shown in Fig. 6, and hold latch 16 in raised position during subsequent staple-driving blows of the handle 3. Handle 3 is then driven downward causing hammer 2 to strike driver-back 19 and force the driver 4 and thestaple toward the work. Handle 3 is then raised ,and lowered a sufi'i- .cient number of times to drive the staple out of staple-guide 6 into the work, the

staple being guided: and supported at all times by the staple-guide 6 which. forces the staple le S into a parallel relationship and over the inding wire held in the groove 29. hen the staple is completely driven, the tool is moved to position for driving the next staple. Knob 20 is again pressed down for ing latch 16 into engagement with latch pin 8 to raise the driver and permit a staple to be fed beneath it when handle 3 is raised.

While the illustrative tool is designed primarily for use in repairing crippled or de fective box blanks, it may be used to advan tage for other purposes, for instance, when a few sample boxes, or boxes of odd sizes, are required, they may be made more economically by using the tool of the invention than by setting up a box blank machine to make the small number of such boxes required; 7

Obviously, the invention is not limited to the particular embodiment thereof shown for illustration but may be otherwise embodied as will appear to those skilled in the art. a

' Having described the invention, I claim: 1. A stapling tool comprising means to hold a supply of staples, a staple-guide to receive and support a staple during a stapledriving operation, means to feed a staple to the staple-guide, a staple-driver, a hammer to impart driving force to the driver, means normally held in inoperative position for connecting said hammer and driver, and

means for causing said last-mentioned means to assume an operative position to cause said driver to be lifted with said hammer so that a staplemay be fed beneath the driver into the staple-guide. A

2. A stapling tool comprising means to hold a supply of staples, a staple-guide to receive and support a staple during a stapledriving operation, means to feed a staple to the staple-guide, a staple-driver, a hammer to impart driving force to the driver, means normally held in inoperative position for connecting said hammer and driver, and

manually operable means for causing said last-mentioned means to assume an operas tive position to cause said'driver to be lifted with said hammer so that a staple may be fed beneath the driver into the staple-guide.

3. A hand-operated stapling tool comprising, in combination, the staple-guide 6, the driver 4: operable in the guide 6, the sta lesupply-arm 7, the staple feed block 8 to eed staples to the guide 6, the hammer 2 to impartfdriving force to the driver, and the latch 16 to raise the driver, all constructed, arranged and operable substantially as and for the purpose described. '4. A stapling tool comprising means to hold a supply of staples, a staple-guide to' receive and support a staple during a stapledriving operation, a staple driverjoperable 

